12-Hole Test Tube Stand for Mixed 30mm and 15mm Tubes, Polyethylene Face Size_26mm Long-and-narrow 6 by 1-inch plane

Long-and-narrow 6 by 1-inch plane glass mirrors arrive as 10-packs at ~2mm thickness

Two 25mm lenses folding out together for 7x combined magnification in a pocket housing

Transmitter and receiver pair on PP3 batteries with 5m and 10m polymer fiber coils

Nine-piece hooked weight set with seven polished brass and two powder-coated steel masses spanning 10 to 1000 grams

Ungraduated

12-Hole Test Tube Stand for Mixed 30mm and 15mm Tubes, Polyethylene Face Size_26mm Long-and-narrow 6 by 1-inch planeFlat pack polythene test tube stand with six 30 mm and six 15 mm holes, disassembling for easy cleaning between uses in chemistry classrooms and student laboratories.